190856842 has 8 divisors (see below), whose sum is σ = 312311232. Its totient is φ = 86753100.

The previous prime is 190856839. The next prime is 190856849. The reversal of 190856842 is 248658091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (190856849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4337634 + ... + 4337677.

It is an arithmetic number, because the mean of its divisors is an integer number (39038904).

Almost surely, 2^190856842 is an apocalyptic number.

190856842 is a deficient number, since it is larger than the sum of its proper divisors (121454390).

190856842 is a wasteful number, since it uses less digits than its factorization.

190856842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8675324.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 190856842 is about 13815.0947155638. The cubic root of 190856842 is about 575.7526044215.

The spelling of 190856842 in words is "one hundred ninety million, eight hundred fifty-six thousand, eight hundred forty-two".